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Finding the Fourth Proportional to 141,462.15, 212,286.70 and 66,603.70

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Solution

The fourth proportional to 141,462.15, 212,286.70 and 66,603.70 is: 99,949.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,462.15 : 212,286.70 = 66,603.70 : x
  2. Step 2: Convert to fraction form
    141,462.15/212,286.70 = 66,603.70/x
  3. Step 3: Cross multiply
    141,462.15x = 212,286.70 × 66,603.70
  4. Step 4: Simplify right side
    141,462.15x = 14,139,079,680.79
  5. Step 5: Solve for x
    x = 14,139,079,680.79/141,462.15
  6. Step 6: Final answer
    x = 99,949.56

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.